Region Code Biasing (ES)

  • This example demonstrates how to send a geocoding request for "Toledo" and receive a result focused on Spain using the region parameter.

  • The returned result's location depends on the specified map region, showcasing how to bias results to a particular geographic area.

  • It provides code samples in TypeScript, JavaScript, CSS, and HTML for implementing this functionality within a web page.

  • Users can interact with the sample through provided links to JSFiddle and Google Cloud Shell, or clone and run it locally using Git and Node.js.

This demonstrates sending a geocoding request for "Toledo" and receiving a result in Spain. The result returned depends on the region of the map. See also the demo for the US region.

Read the documentation.

TypeScript

async function initMap(): Promise<void> {
  await Promise.all([
    google.maps.importLibrary("maps"),
    google.maps.importLibrary("geocoding"),
    google.maps.importLibrary("marker"),
  ]);

  const mapElement = document.querySelector("gmp-map") as google.maps.MapElement;
  const innerMap = mapElement.innerMap;
  const geocoder = new google.maps.Geocoder();

  geocoder
    .geocode({ address: "Toledo" })
    .then((response) => {
      const position = response.results[0].geometry.location;

      innerMap.setCenter(position);
      new google.maps.marker.AdvancedMarkerElement({
        map: innerMap,
        position,
      });
    })
    .catch((e) =>
      window.alert("Geocode was not successful for the following reason: " + e)
    );
}

initMap();
index.ts

JavaScript

async function initMap() {
    await Promise.all([
        google.maps.importLibrary("maps"),
        google.maps.importLibrary("geocoding"),
        google.maps.importLibrary("marker"),
    ]);
    const mapElement = document.querySelector("gmp-map");
    const innerMap = mapElement.innerMap;
    const geocoder = new google.maps.Geocoder();
    geocoder
        .geocode({ address: "Toledo" })
        .then((response) => {
        const position = response.results[0].geometry.location;
        innerMap.setCenter(position);
        new google.maps.marker.AdvancedMarkerElement({
            map: innerMap,
            position,
        });
    })
        .catch((e) => window.alert("Geocode was not successful for the following reason: " + e));
}
initMap();
index.js

CSS

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

style.css

HTML

<html>
  <head>
    <title>Geocoding Region - ES</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
    <!-- prettier-ignore -->
    <script>(g => { var h, a, k, p = "The Google Maps JavaScript API", c = "google", l = "importLibrary", q = "__ib__", m = document, b = window; b = b[c] || (b[c] = {}); var d = b.maps || (b.maps = {}), r = new Set, e = new URLSearchParams, u = () => h || (h = new Promise(async (f, n) => { await (a = m.createElement("script")); e.set("libraries", [...r] + ""); for (k in g) e.set(k.replace(/[A-Z]/g, t => "_" + t[0].toLowerCase()), g[k]); e.set("callback", c + ".maps." + q); a.src = `https://maps.${c}apis.com/maps/api/js?` + e; d[q] = f; a.onerror = () => h = n(Error(p + " could not load.")); a.nonce = m.querySelector("script[nonce]")?.nonce || ""; m.head.append(a) })); d[l] ? console.warn(p + " only loads once. Ignoring:", g) : d[l] = (f, ...n) => r.add(f) && u().then(() => d[l](f, ...n)) })
        ({ key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly", region: "ES" });</script>
  </head>
  <body>
    <gmp-map zoom="8" map-id="DEMO_MAP_ID"></gmp-map>
  </body>
</html>
index.html

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. 

  git clone https://github.com/googlemaps-samples/js-api-samples.git
  cd samples/geocoding-region-es
  npm i
  npm start